do_renameat2+0x809/0xc50 fs/namei.c:5280
 __do_sys_rename fs/namei.c:5325 [inline]
 __se_sys_rename fs/namei.c:5323 [inline]
 __x64_sys_rename+0x7d/0xa0 fs/namei.c:5323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1498!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 15120 Comm: syz.4.2624 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:folio_unlock mm/filemap.c:1498 [inline]
RIP: 0010:folio_unlock+0xb3/0xd0 mm/filemap.c:1493
Code: a3 5d c9 ff 48 89 ef 31 f6 e8 f9 ed ff ff 5b 5d e9 92 5d c9 ff e8 8d 5d c9 ff 48 c7 c6 e0 1b b9 8b 48 89 ef e8 5e 0d 12 00 90 <0f> 0b 48 89 df e8 e3 bc 2f 00 e9 7b ff ff ff 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc90006367980 EFLAGS: 00010283
RAX: 000000000006a973 RBX: 0000000000000000 RCX: ffffc90029aa4000
RDX: 0000000000080000 RSI: ffffffff81f24152 RDI: ffff888065e4a884
RBP: ffffea0000db0600 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab7397 R11: 0000000000000002 R12: ffff8880552eb5a0
R13: ffffc90006367de8 R14: ffffea0000db0600 R15: dffffc0000000000
FS:  00007f256426d6c0(0000) GS:ffff8880d68b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555946e3808 CR3: 0000000047af6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 netfs_perform_write+0xacd/0x1e60 fs/netfs/buffered_write.c:407
 netfs_buffered_write_iter_locked fs/netfs/buffered_write.c:452 [inline]
 netfs_file_write_iter+0x495/0x570 fs/netfs/buffered_write.c:491
 v9fs_file_write_iter+0x9b/0x100 fs/9p/vfs_file.c:407
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x7d0/0x11d0 fs/read_write.c:686
 ksys_write+0x12a/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f256338eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f256426d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f25635d5fa0 RCX: 00007f256338eba9
RDX: 000000000000025f RSI: 0000200000000700 RDI: 0000000000000007
RBP: 00007f2563411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25635d6038 R14: 00007f25635d5fa0 R15: 00007ffe29b5f778
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_unlock mm/filemap.c:1498 [inline]
RIP: 0010:folio_unlock+0xb3/0xd0 mm/filemap.c:1493
Code: a3 5d c9 ff 48 89 ef 31 f6 e8 f9 ed ff ff 5b 5d e9 92 5d c9 ff e8 8d 5d c9 ff 48 c7 c6 e0 1b b9 8b 48 89 ef e8 5e 0d 12 00 90 <0f> 0b 48 89 df e8 e3 bc 2f 00 e9 7b ff ff ff 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc90006367980 EFLAGS: 00010283
RAX: 000000000006a973 RBX: 0000000000000000 RCX: ffffc90029aa4000
RDX: 0000000000080000 RSI: ffffffff81f24152 RDI: ffff888065e4a884
RBP: ffffea0000db0600 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab7397 R11: 0000000000000002 R12: ffff8880552eb5a0
R13: ffffc90006367de8 R14: ffffea0000db0600 R15: dffffc0000000000
FS:  00007f256426d6c0(0000) GS:ffff8880d68b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86404f26c8 CR3: 0000000047af6000 CR4: 0000000000352ef0